Danfoss VLT Series Design Manual page 158

8. Troubleshooting
ALARM 33
Inrush fault:
Too many powerups have occured within a
short time period. See the chapter
Specifications
erups within one minute.
WARNING/ALARM 34
Fieldbus communication fault:
The fieldbus on the communication option
card is not working.
ALARM 38
Internal fault:
Contact your local Danfoss supplier.
WARNING 47
24 V supply low:
The external 24 V DC backup power supply
may be overloaded, otherwise contact your
Danfoss supplier.
8
ALARM 48
1.8 V supply low:
Contact your Danfoss supplier.
WARNING 49
Speed limit:
The speed has been limited by range in par.
4-11 and par. 4-13.
ALARM 50
AMA calibration failed:
Contact your Danfoss supplier.
ALARM 51
AMA check Unom and Inom:
The setting of motor voltage, motor current,
and motor power is presumably wrong. Check
the settings.
ALARM 52
AMA low Inom:
The motor current is too low. Check the set-
tings.
ALARM 53
AMA motor too big:
The motor is too big for the AMA to be carried
out.
158
General
for the allowed number of pow-
MG.11.B2.02 - VLT
ALARM 54
AMA motor too small:
The motor is too small for the AMA to be car-
ried out.
ALARM 55
AMA par. out of range:
The par. values found from the motor are out-
side acceptable range.
ALARM 56
AMA interrupted by user:
The AMA has been interrupted by the user.
ALARM 57
AMA timeout:
Try to start the AMA again a number of times,
until the AMA is carried out. Please note that
repeated runs may heat the motor to a level
where the resistance Rs and Rr are increased.
In most cases, however, this is not critical.
WARNING/ALARM 58
AMA internal fault:
Contact your Danfoss supplier.
WARNING 59
Current limit:
The current is higher than the value in par.
4-18.
WARNING 62
Output Frequency at Maximum
The output frequency is limited by the value
set in par. 4-19
ALARM 63
Mechanical Brake Low:
The actual motor current has not exceeded
the "release brake" current within the "Start
delay" time window.
WARNING 64
Voltage Limit:
The load and speed combination demands a
motor voltage higher than the actual DC link
voltage.
WARNING/ALARM/TRIP 65
Control Card Over Temperature:
Control card over temperature: The cut-out
temperature of the control card is 80° C.
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VLT HVAC Drive Design Guide
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